Lifting device for cement mixers and the like

Claim 2

A lifting device for cement mixers and the like, said device comprising a rocker framework and an adjustable support framework slidably connected to said rocker framework, said rocker framework including first bracket means for connection to one portion of a cement mixer framework, said adjustable support framework including second bracket means for connection to another portion of a cement mixer framework, said lifting device being movable between a vertical position and a horizontal position to raise a mixer to a desired height above a support surface, said rocker framework including a paIr of elongated rocker members having first ends connected to said first bracket means and opposite ends connected to a collar assembly which slidably engages said adjustable support framework, each of said elongated rocker members being compoundly curved with a generally circular curve in a vertical plane for rocking movement of said lifting device and with oppositely bowed curves in a horizontal plane to provide lateral strength to said lifting device.

Claim 3

A lifting device for cement mixers and the like, said device comprising a rocker framework and an adjustable support framework slidably connected to said rocker framework, said rocker framework including first bracket means for connection to one portion of a cement mixer framework, said adjustable support framework including second bracket means for connection to another portion of a cement mixer framework, said lifting device being movable between a vertical position and a horizontal position to raise a mixer to a desired height above a support surface, said rocker framework including a pair of elongated rocker members having first ends connected to said first bracket means and opposite ends connected to a collar assembly which slidably engages said adjustable support framework, said adjustable support framework including a pair of spaced parallel support members slidably received in said collar assembly for selective reciprocal adjustment relative thereto, said support members each including a straight sliding portion slidably received by said collar assembly and connected to said second bracket means and a leg portion extending at an angle to said straight portion to cooperate with a support surface when said lifting device is in said horizontal position.

Claim 4

A lifting device for cement mixers and the like, said device comprising a rocker framework and an adjustable support framework slidably connected to said rocker framework, said rocker framework including first bracket means for connection to one portion of a cement mixer framework, said adjustable support framework including second bracket means for connection to another portion of a cement mixer framework, said lifting device being movable between a vertical position and a horizontal position to raise a mixer to a desired height above a support surface, said rocker framework including a pair of elongated rocker members having first ends connected to said first bracket means and opposite ends connected to a collar assembly which slidably engages said adjustable support framework, said adjustable support framework including a pair of spaced parallel support members slidably received in said collar assembly for selective reciprocal adjustment relative thereto, said support members each including a straight sliding portion slidably received by said collar assembly and connected to said second bracket means and a leg portion extending at an angle to said straight portion to cooperate with a support surface when said lifting device is in said horizontal position.

Claim 5

The structure set forth in claim 2 wherein said second bracket means is attached to said sliding portions of said support members such that adjustment of said support members adjusts the position of said second bracket means relative to said first bracket means to accommodate mixers of different longitudinal dimension.

Claim 6

The structure set forth in claim 2 wherein said adjustable support framework includes a resting plate connecting the ends of said leg portions and adapted to engage a support surface when said lifting device is in said horizontal position.

Claim 7

The structure set forth in claim 2 wherein said collar assembly includes a pair of parallel open-ended collars, said support member straight portions extending through each of said collars.

Claim 8

The structure set forth in claim 5 wherein said first mounting bracket includes an elongated angle bracket which lies in a plane substantially perpendicular to said collars and to said support member straight portions.

Claim 9

The structure set forth in claim 6 wherein said second bracket means a mounting plate which straddles said parallel support members and is fastened thereto at a location adjacent to said bends such that a substantial length of the sliding portions are available for adjustment purposes.

Claim 10

The structure set forth in claim 7 wherein said first mounting bracket includes a plurality of spaced tabs adapted to position a portion of a mixer framework.

Claim 11

The structure set forth in claim 2 wherein said elongated rocker members are curved in a generally circular configuration to provide a circular support surface for rocking said lifting device between said vertical position and said horizontal position.

Claim 12

A lifting device for cement mixers and the like, said device comprising a rocker framework and a support framework adjustably connected to said rocker framework, said rocker framework including first bracket means for connection to one portion of a cement mixer framework, said support framework including second bracket means for connection to another portion of a cement mixer framework, said lifting device being movable between a vertical position and a horizontal position to raise a mixer to a desired height above a support surface, said rocker framework including at least one cuRved rocker member having a first end connected to said first bracket means and an opposite end slidably connected to said adjustable support framework to selectively adjust the spacing between said first and second bracket means, said adjustable support framework including at least one support member with a straight portion slidably connected to said rocker framework for selective reciprocal adjustment relative thereto and a leg portion extending at an angle to said straight portion to cooperate with a support surface when said lifting device is in said horizontal position.

Claim 13

A lifting device for cement mixers and the like, said device comprising a rocker framework and a support framework adjustably connected to said rocker framework, said rocker framework including first bracket means for connection to one portion of a cement mixer framework, said support framework including second bracket means for connection to another portion of a cement mixer framework, said lifting device being movable between a vertical position and a horizontal position to raise a mixer to a desired height above a support surface, said rocker framework including at least one cuRved rocker member having a first end connected to said first bracket means and an opposite end slidably connected to said adjustable support framework to selectively adjust the spacing between said first and second bracket means, said adjustable support framework including at least one support member with a straight portion slidably connected to said rocker framework for selective reciprocal adjustment relative thereto and a leg portion extending at an angle to said straight portion to cooperate with a support surface when said lifting device is in said horizontal position.

Claim 14

The structure set forth in claim 10 wherein said device includes a collar assembly attached to said opposite end of said rocker member and slidably engaging said straight portion of said support framework.